(This is the profile for my Oc and the main character of the story.)

Name: Mizuki Uzumaki-Yuki

Nicknames:

Mizuki-chan (Obanai)

Lady Mizuki (by other Hashira and Kakushi members)

Mizu (Inosuke)

Mizu-chan (Naruto)

Gender: Female

Birthday: May 17th

Age: 12(prologue)-14

Height: 4'9 (prologue)-5'4

Family:

Father- Menma Uzumaki

Mother- Hana Yuki

older cousin- Kushina Uzumaki

Cousin in law: Minato Namikaze

Younger cousin: Naruto Uzumaki

Friends:

Tanjiro Kamado

Kanao Tsuyuri

Mitsuri Kanroji

Shinobu Kocho

Inosuke Hashibira

Zenitsu Agatsuma

Aoi

Tatsuki Kuroi

Mitsuri Kanroji 

Shinbou Kocho

Appearance: Mizuki is a fair-skinned young girl with striking red hair streaked with white, flowing down to her mid-back with soft bangs that frame her forehead. She has captivating, bright ice-blue eyes that are both striking and cold, emphasizing her affinity with ice. She has a slender yet athletic build, suited to her role as a Demon Slayer, and medium-sized breasts. (the picture above doesn't match completely but that the picture i have at the momment.)

Outfits:

Casual Outfit: She wears a red and blue kimono with black pants and a haori with black and red stripes, a subtle homage to Obanai's white-and-black striped haori.

Demon Slayer Uniform: Her uniform is custom-tailored in a deep red with matching pants and a white belt, which secures her Nichirin Sword in its serpent-themed scabbard. She completes her look with her black and red striped haori along with black socks and brown sandals and her b

Personality: Mizuki is a quiet and reserved person, often keeping her emotions under control. Despite her calm demeanor, she is deeply compassionate and cares greatly for her loved ones, showing a particular devotion to Obanai, for whom she always prepares something special on his birthday. Mizuki's dedication to her friends and family drives her to become a reliable protector, and her steady resolve helps her stay composed even in dire situations. Her deep connection with her friends is evident through her strong sense of duty and willingness to go to great lengths to support them.

Likes: writing poetry, snakes, spending time with Obanai & Kaburamaru, training, and talking with Inosuke.

Dislikes: Muzan, demons, not knowing her family, extremely hot weather ,people act they understand other feelings without knowing anything about them, and anyone who insults Obanai

Breathing styles: ( I gave serpent breathing seven forms might give it eight instead.)

Serpent breathing-

First Form: Winding Serpent (壱ノ型・委蛇, Ichi no kata: Ida)
Mizuki executes three rapid, forward slashes followed by a rotating slash that drives her opponent back. The final rotation is highly damaging, ideal for countering larger demons.

Second Form: Venom Fangs (弐ノ型・毒牙, Ni no kata: Dokuga)
Entering a defensive stance for three seconds, Mizuki prepares a deadly counterattack. If struck within this period, she retaliates with an overwhelming barrage of slashes from various angles.

Third Form: Coil Choke (参ノ型・塒締め, San no kata: Toguro Jime)
Mizuki summons a massive spectral serpent that coils around her target, immobilizing them temporarily while dealing ongoing damage, setting up the ideal opportunity for a finishing strike.

Fourth Form: Twin-Headed Reptile (肆ノ型・頸蛇双生, Shi no kata: Keija Sōsei)
With a forward rush, Mizuki executes a powerful slash, closing the gap between her and her opponent. This form is useful for initiating combinations and chaining attacks.

Fifth Form: Slithering Serpent (伍ノ型・蜿蜿長蛇, Go no kata: En'en Chōda)
After a brief delay, Mizuki darts forward with blinding speed, delivering a final, lethal slash aimed to finish her opponent in one strike.

Sixth Form: Serpent's Mirage (陸ノ型・蛇影, Roku no kata: Jaei)
Mizuki creates multiple mirages of herself, confusing the opponent before delivering a series of unpredictable slashes from different angles.

Seventh Form: Venomous Rebirth (漆ノ型・毒生, Shichi no kata: Dokusei)
Mizuki channels her strength into a powerful single blow, generating a venomous aura that poisons her enemy over time if the strike connects.

Ice Breathing-

First Form: Frost Edge (壱ノ型・霜刃, Ichi no kata: Shimojin)
Mizuki performs a sweeping arc, creating an icy trail that freezes anything it contacts momentarily, ideal for immobilizing fast opponents.

Second Form: Shiver Fang (弐ノ型・震牙, Ni no kata: Shinga)
A rapid thrust of her sword that emits freezing energy, piercing her opponent with icy shards that cause both immediate and lingering frost damage.

Third Form: Glacier Wall (参ノ型・氷壁, San no kata: Hyōheki)
Mizuki creates a solid wall of ice as a temporary shield or barrier, allowing her a moment to strategize or defend against overwhelming attacks.

Fourth Form: Crystalized Fangs (肆ノ型・結晶牙, Shi no kata: Kesshōga)
A powerful combo attack that surrounds her blade in crystallized ice, increasing its sharpness and enabling her to slice through her opponent with ease.

Fifth Form: Frozen Lotus (伍ノ型・凍蓮華, Go no kata: Tōrenge)
Mizuki spins in a rapid, circular motion, sending out frozen shards in all directions, creating a lotus-like pattern of ice.

Sixth Form: Winter's Embrace (陸ノ型・冬の抱擁, Roku no kata: Fuyu no Hōyō)
An overhead swing that releases a freezing mist, chilling her opponent and gradually reducing their mobility over time.

Seventh Form: Snowflake Descent (漆ノ型・雪片降臨, Shichi no kata: Sekka Kōrin)
Mizuki leaps into the air, then descends while unleashing a flurry of icy slashes that appear like falling snowflakes, damaging anything in her path.

Eighth Form: Blizzard Rush (捌ノ型・吹雪突進, Hachi no kata: Fubuki Tosshin)
A full-speed dash combined with a series of ice-imbued strikes, overwhelming her opponent with both speed and cold.

Ninth Form: Ice Prison (玖ノ型・氷牢, Ku no kata: Hyōrō)
Mizuki traps her opponent within a sphere of ice, immobilizing them completely, often used to prepare for a finishing blow.

Tenth Form: Arctic Cataclysm (拾ノ型・北極破滅, Jū no kata: Hokkyoku Hametsu)
Mizuki channels all her energy into a devastating attack that sends forth a surge of ice, covering the battlefield in a glacial expanse, dealing immense damage to anything caught within.

Background: Mizuki was found as a baby alone in the woods and was rescued by a young Obanai Iguro, who, despite being only a few years older, took on the responsibility of raising her. Through his guidance, Mizuki developed a fierce resolve and honed her skills in both Serpent Breathing and Ice Breathing. Growing up under Obanai's care, she views him as both a father figure and an older brother, forging an unbreakable bond between them. 

Ninchrin Sword: Mizuki's blade is a stunning pale icy blue, constantly emitting a faint mist that suggests its icy power. The sword's blade is slightly curved, with a unique serpentine wave along its edge that resembles a coiling snake, enhancing its fluidity and precision. The hilt is wrapped in deep violet silk with light blue accents for grip, while the tsuba (guard) is designed as a coiling dragon or serpent, with silver-etched scales and sapphire eyes for added mystique. The scabbard is sleek blackened steel with a reflective finish that hints at its frosty nature. Intricate carvings of intertwining serpents and icicles run along its length, representing the combination of serpent-like agility and icy power. Near the mouth, an engraved snowflake with a serpent coiled around it serves as an emblem, symbolizing Mizuki's mastery of both Serpent and Ice Breathing techniques.

Lover: Inosuke

(I will release the next profile for one of the two others oc's that will be in the story belonging to two other people who made them for the story later on today or tomorrow. )